Internal-combustion engine.



A. L. RIKEH.

INTERNAL CO'NBUSUON ENGINE.V

APPLICATION FILED MAR. 28| 1.910.

Patnd Jmm 4, 1918.

downward or suction stroke.

from the crank shaft 2 or other` suitable part, as by means of gearing, as indicated in dotted lines in said Iiig. 1, and preferabl in the ratio of two to one. Upon the sha t 21 is fast an eccentric 38 having an eccentric strap 39 pivoted to a lever 10 mounted upon a suitable part of the frame and connected at its outer end by a link 41 to the valve rod 19. Any suitable connection may be employed between the eccentric and said valve rod, but preferably JI provide means such as the lever 40 to reduce the length of stroke of the valve rod 19 and valve 15. In the construction showin, the valve is positively moved in both directions of reciprov cation.

The upper end of the valve chamber is closed by a plug 22 threaded thereinto, and the said valve is provided with a transverse port 23 adapted, when the valve is lifted, to place the passage 11 in communication with the interior of the cylinder for the admission of the fuel mixture thereto.

While any suitable type and arrangement of exhaust valve may be provided, 1 have herein represented a valve 24, similar it may be to the admission valve 15. That is to say, the said valve is adapted to be rcciprocated in a plunger like manner within a preferably cylindrical chamber 25 formed in a laterall projecting portion of the cylinder and erein Ishown as diametrically opposite the admission valve'l. The upper end of the valve chamber is represented as closed by a threaded plug 26 and the said valve is provided with a valve rod 27 suitably reciprocated and as herein shown by substantially the means indicated for reciprocating the valve 15. That, is tosay, the valve rod 27 has adjustably connected thereto by a right and leftthreaded sleeve 28 a rod 27. Upon a shaft 31 is mounted an eccentric 33, the strip 89 whereof is pivotally connected to a lever 40 mounted in the framing of the engine and connected by a lilik 41 to said rod 27. The shaft 31 is suitably driven from the crank shaft 2 or other suitable part, as by means of gearing indicated in dotted lines in Fig. 1, and in preferably the ratio of two to one.

The exhaust` valve 24 is provided with a transverse port 32 adapted, when the valve is lifted, to place the interior of the cylinder 6 into communication with the exhaust passage 33 leading to the exhaust pipe 34.

Preferably both the admission and the exi haust valves are arranged at the head end of the cylinder as shown.

In the position of the parts shown in Fig. 1, the admission valve 15 is about to open and the piston 5 is about to commence its At about the completion of said suction stroke the valve 15 is depressed and closed by the continued rotation of the cam shaft 21, and thereupon the movement of the piston i is reversed and thc com, )ression` stroke is effected. Upon the ternination of the con'ipression stroke ignition occurs and the downward or working stroke of the piston takes place. Preferably t substantially the completion of the workng stroke, though the timing olI the parts may be varied to effect the best results, the exhaust valve 24 is opened and upon the exhaust stroke of the piston the spent gases are@ expelled through the Jort 32 thereof. This completesone cycle o the engine. .il

The construction chown in Fig. 2 may diiler only from that shown in Fig. l with regard to the construction of either the admission or exhaust valves or both. In `the construction shown in F ig. 1, said' valves are preferably formed as cylindrical `or otherwise suitably shaped plungers or plugs, each having a transverse port therethrough. In the constructionof the engine shown in Fig. 2 the admission and exhaust valves 35 and are each shown as of inverted cup-like formation. Each of said valves is adapted to seat and close against or Within the valve sent 37, 37 and when lifted therefrom respectively permit the admission of the fuel mixture and the exhaust of the spent gases therefrom. That is to say, in the type of valve shown in Fig. 2, the admission or exhaust occurs beneath the valve rather than through the same, although within the scope of my invention the admission and exhaust may be either above or below said valve or valves.

Any suitable means may be employed to reciprocate the valves 35, 36, and while I may employ substantially the construction represented Iin Fig` 1 for reciprocating the valves 15 and 24, I have herein represented said valves 35 and 36 as provided with valve rods 29 threaded at their upper ends into said valves and at their lower ends suitably guided andprovirled with rolls 30 bearing upon cams 31 fast u on cam shafts 32 driven from the crank sha t 2 by caring or otherwise as indicated in dotted mes,.and preferdescriptive sense and not for purposes of limitation, the scope of the invention being set forth in' th following claims.

Claims:

1. An intinal combustion engine comprising, in c nnbination, a cylinder, a piston,

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iL An inl/(armi Csm Miou angine lzzwmg a cyinder., u pistmu, (junk shaft and aennectihg rml, irmusw Saly munged anmsmin and exhaust por opening into saisi -fynder an the rear und thereof, a cylndxca @kf-'Wg 

